Overrides \Drupal\views\Plugin\views\HandlerBase::init().
Init handler to let relationships live on tables other than the table they operate on.
Overrides HandlerBase::init
public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
parent::init($view, $display, $options);
if (isset($this->definition['relationship table'])) {
$this->table = $this->definition['relationship table'];
}
if (isset($this->definition['relationship field'])) {
// Set both realField and field so custom handler can rely on the old
// field value.
$this->realField = $this->field = $this->definition['relationship field'];
}
}